Furnace baffle-plate.



W. FARBEH.

FURNACE BAFFLE PLATE.

APPLICATION FILED APR. I4, I9I4. LLGQJYM.. Patented Feb. 1, 1916.

THE COLUMBIA PLANOURAPH CO., WASHINGTDN, DI C.

miran sransieariawr oil-iris.

WILLIAM FAB-BER, OF LONG- PRAIlR-IE, MINNESOTA; I, l

Y rnniviion narran-raars.

To all whom t may concern:

Be it liiown that l, l/ViLLiAM FARBER, a

citizen of the United States, residing at Long Pairie, in the county of rlodd and State of Minnesota, have invented a new and useful Furnace Batlle-Plate, of which the following is a specification.

|This invention relates to improvements in baffle plates for furnaces and more particularly to a baille plate for use in connection with straw burning furnaces.

rlhe object of the present invention is to provide a baflie plate made o f metal and so shaped as to successfully resist the high teinperatures to which it will be exposed, maintain its shape throughout a long period of y service, and thus do away with the constant baffle plates as is necessary with those annoyance of the breaking and replacing of formed of fire brick or allied material.l

A further object is to provide an inclined' arch formed of a plurality of baffle plates, which baille plates are curved, with the convex surface extending uppermost, and with the lower concave surface provided with a` plurality of -longitudinally and transversely extending 'ribs' thus providing an under surface which will catch the straw and materially aid in its combustion, and at theV same time the baille plates are provided with a smooth and crowned upper surface which latter prevents the accumulation of soot and ashes which would interfere with maintaining the same in a clean condition.

A further obj ect is to provide an inclined arch comprising a plurality of baffle plates, any one of which may be removed or replaced independent of the others and each of which is provided with a series of longitudinally and transversely extending lower ribs, the saine defining pockets preventing the straw from passing through the boiler in an unburnt condition and also providing a greater heat absorbing surface and consequently, a greater heat radiating surface. The ribs also hold the plate against warping, materially add to its strength, and allow the concave plate of which each baffle plate is formed to be made of thin metal.

Wit-h the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of Specification of Letters Patent.` i

ln the drawings accompanying this speciication and forming a part thereof, the

preferable form of myv invention has been illustrated, in which .Figure 1 is a detail view in section of the rear section of a `boiler and fire box with my improved inclined arch formedofbaflle plates therein. Fig. 2 is a front view in section of a portionl of the fire box and one of the baille plates. Fig. 3 is a detail view in perspective of one of the baflle plates, showing the same-reversed in order to more clearly disclose the construction of its under surface.

. Patentes reni, isis.

Vl-lpplicationfiled Apr-1114,1914; SeraINaVSBLSZS.

Referring to the drawings in which similar reference numerals designate corre spending parts thoughout the several views, l Vrepresents the fire box of the boiler 5,

which latter is provided with-tirelire tubes 6L A grate 7 exten-ds across tli'f'af-iirek box,` is ofthe usual construction., and `.is` situated below the main ,door-1.8,' An auxiliary 'door 9 is positioned above the door 8 and intermediate the two doors isl placed the inclined arch 10 formed of a plurality of baffle plates 1.1.

The baille plates which define the inclined arch are all similar in construction so that only one will be treated in detail. It is to be understood in this connection that the number of baille plates used will be purely arbitrary and will depend upon the size of the furnace or boiler. Each baffle plate includes the arcuate plate 12 with the convex surface representing the top and which is smooth so as to be easily cleaned and preventing the collecting or accumulation of soot or allied material thereon. Cast integral with the plate 12 and projecting downwardly from its lower concave surface are the longitudinally extending ribs 13 and the transverse ribs 14.

The ribs add materially to the strength of the baffle plate and allow the plate 12 to be made of relatively thin material. Mention is made of the fact that the lower edge 19 of the rib is arcuate, and is formed as the are of a circle of relatively greater radii than the radius of curvature of the plate 12. The ribs 13 and 14C define a series or plurality of pockets P which are of graduplate are provided with the apertures 16 extending therethrough by means o-f which the baffle plates are rigidly clamped to the angle bar supports 17. This is effected by boltslSor other equivalent means. A plurality of the baille Plates are assembled side sarily pass around the one end of the inclined arch as indicated by the arrow in Fig. l.

The many advantages of forming the baille plates of metal and as described, will be appreciated when it is noted that the downwardly extending ribs define a discontinuous surface against which the burning straw will strike and cling. The pockets also provide for the temporary reception of the -v burning material and also produce eddy currents of the gases, thus hindering the direct passage ofthe straw from the door 8 into the fire tubes 6. Also mention is made of the fact that a greater heat absorbing and therefore greater heat radiating surface will be obtained by the ribs, thus lengthening the life of the baille plates and providing for a more eicacious operation during such life. The upper or crown surface of the inclined arch being-smooth, prevents the accumulation o-f soot or ashes and allows it to be easily cleaned and readily maintained in such condition.

Having thus fully described my invention, what I claim to be new and original with me is As an article of manufacture, a furnace bafile plate comprising in a one-piece Symmetrical structure, an imperforate concaved body of equal thickness from end to end and provided at its ends with attaching flanges the under faces of which lie in a common plane, the flanges being provided with attaching openings, the body being equipped upon its concaved side with parallel crescent-shaped ribs extended from onev flange to the other and located along the longitudinal edges of the body and intermediate the longitudinal edges of the body, the body being supplied midway between its ends and upon its concaved side with a single transverse rib connecting all of the longitudinal ribs, the transverse rib being thicker than the longitudinal ribs and being of the same height as the longitudinal ribs.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

WILLIAM FARBER.

Witnesses:

WILL WILKE, R. F. WILKE.

i Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C. 

